On Thu, 23 Aug 2012 18:37:59 -0500, bearophile <bearophileh...@lycos.com>
wrote:
Charles Hixson:
Is it possible to detect when a program is using, say, 90% of the
memory that is available, so that I can take steps to reduce usage?
With computers that have virtual memory this is not so easy to do. I
think you have to use operating system-specific code to ask the OS about
the physical available memory, about the virtual memory used, the rate
of virtual memory swapping, and use those three values in some way.
Bye,
bearophile
On linux this is not so difficult to do.
Those values are generally in /proc, and it seems to be portable across
pretty much every distro with a relatively recent kernel.
I have an extremely half-assed bit of code that prints the load average
and the totaly % of mem used to my tmux session.
It gives the exact same values that are seen in top, or htop.(without the
overhead of parsing their output, cause that takes ~500ms, way too slow.)
It would make a decent starting point at least.
I would imagine that you wouldn't even need to know the % of memory YOUR
program is using, just the general percentage overall.
After all, no matter who is eating all the memory, shit's about to hit the
fan if *someone* doesn't free some memory.
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